The answer is 72 because 4x18=72,6x12=72 and 8x9=72
Depending on significant figures, it can be put into scientific notion. If significant figures is 2, the answer would be simplified to 19 x 10^3.
Since the exponent is 3, and in the parentheses is x+y, it's basically
(x+y)(x+y)(x+y)
You write out x+y 3 times since the exponent is 3.
If the exponent was 4, you would write out x+y 4 times and so on.
The 3 gives value to the x+y and how many to use or calculate before getting your answer.
Two lines that will never touch each other
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